Title: SEA: Disease Impacts on PWS Herring Populations
Project Year and Number: 1994: 94320-S
Other Fiscal Years and Numbers for this Project: 1995: 95320-S
Principal Investigator (PI): Gary Marty, BC Ministry of Agriculture and Lands
Assisting Personnel: Corrine Davis, Thomas Farver, Ellen Freiberg, David Hinton, Ted Meyers, John Wilcock
Research Location: Prince William Sound
Restoration Category: Research
Injured Resources Addressed: Pacific Herring
Abstract: The Sound Ecosystem Assessment (SEA) program is a multi-disciplinary effort to acquire an ecosystem level understanding of the marine and freshwater processes that interact to constrain levels of fish, marine bird, and marine mammal production in Prince William Sound (PWS). Pacific herring in PWS provide important forage for many mammals, birds, and fish, and the herring harvest contributes substantially to local economies. PWS adult herring population appeared to crash in 1993. Herring are long lived fish (to 15 years), and in the absence of catastrophic events, dramatic population declines should not be expected. During the 1993 herring spawning season, skin lesions were seen on one-sixth to almost one half of the herring in almost every school. Viral Hemorrhagic Septicemia virus (VHSV) was isolated from these herring but no determination was made whether VHSV was the cause of the crash. VHSV has the potential to infect many species of bony fishes, but its ability to produce disease varies from species to species and strain of virus. This component of the SEA program will examine the general condition and spawning condition of PWS herring and compare these measurements of overall health to the incidence of VHSV. Herring will be randomly selected, visually screened and scored for lesions, measured, and subjected to a complete necropsy. Analysis of covariance will be used to test for the significance of associations between the various measurements.
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Proposal: PDF Not Available
Funding Recommendations: View
Funding Detail For: 1994
Quarterly Project Tasks For: 1994
Annual Report: 1994: View (6,104 KB)
Final Report: Not Available - For Current Status Please Contact Us
Publications from this Project: None Available
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| Project Number | Proposal | Annual Reports | Final Report | Data |
|---|---|---|---|---|
| 1995: 95320-S | Not Available |
1995:
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See Project 94320-S | See Project 94320-S |